These control knobs are an accurate means of making fine, precise position adjustments. The light grey cover is attractive and at the same time it covers the hub. The cover also lends itself for a logo or other symbols. Cost effective and long lasting.

The cover is held in place by firmly pushing it into the recess. It can be removed by inserting a screw driver into the slot provided.

The collet provides a simple way of positioning and locking the control knob to the shaft.

Manufacturing these control knobs from an aluminum extrusion allows specials to be made in existing diameters at relatively low cost.